Open end of a wrench head



FIG. 1 is a top front perspective view of an open end of a wrench headshowing the new design;

FIG. 2 is an enlarged top front perspective view thereof;

FIG. 3 is an enlarged top plan view thereof; and,

FIG. 4 is an enlarged front elevational view thereof.

The broken lines depict portions of the open end of a wrench head thatform no part of the claimed design.

CLAIM The ornamental design for an open end of a wrench head, as shownand described.